EP1579007A2 - Method and means for determining specific conditions or changes in the uterine epithelium and in the epithelium of other organs - Google Patents
Method and means for determining specific conditions or changes in the uterine epithelium and in the epithelium of other organsInfo
- Publication number
- EP1579007A2 EP1579007A2 EP03808254A EP03808254A EP1579007A2 EP 1579007 A2 EP1579007 A2 EP 1579007A2 EP 03808254 A EP03808254 A EP 03808254A EP 03808254 A EP03808254 A EP 03808254A EP 1579007 A2 EP1579007 A2 EP 1579007A2
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- EP
- European Patent Office
- Prior art keywords
- hcg
- seq
- primer
- cdna
- pcr
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
- C12Q1/6886—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material for cancer
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/112—Disease subtyping, staging or classification
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/16—Primer sets for multiplex assays
Definitions
- the invention relates to methods and means for determining defined conditions or changes in the uterus.
- Conditions of the uterine epithelium or epithelia of other organs which are to be determined in particular with the invention, are the receptivity of the uterine mucosa for the implantation of an embryo or neoblastic and tumorous changes.
- the field of application is medicine, especially gynecology and oncology.
- hCG Human chorionic gonadotropin
- hCG Human chorionic gonadotropin
- hCG dimer and free ⁇ -hCG and ß-hCG molecules and secrete them into the blood.
- hCG or its subunits are also expressed in small amounts in some non-trophoblastic tissues (2-6). Therefore, hCG concentrations from hCG to 1000 pg / ml and from ß-hCG to 100 pg / ml are also observed in the blood of healthy non-pregnant people (7, 8).
- Higher ß-hCG serum values indicate a gonadal or non-gonadal tumor and indicate an unfavorable prognosis, as described for lung, bladder, prostate, colon, kidney cell and breast cancer (5, 9-13).
- Embryonic trophoblastic tissue expresses almost exclusively hCG ß5, ß8 and ß3. These ß-hCG subunits are therefore also called trophoblastic ß-hCG (tß-hCG) or type l-ß-hCG. hCG ß7 and ß6 are only slightly used in some non-trophoblastic tissues, such as B. breast, lung, prostate, skeletal muscles, bladder, colon, uterus, expressed (17). These ß-hCG subunits are therefore also referred to as non-trophoblastic ß-hCG or type II-ß-hCG.
- type 11-ß-hCG (ß5, ß8 and ß3) contain an aspartate (Asp, D) at position 117 (exon 3) of the amino acid sequence
- type 1-ß-hCG (ß7 and ß6) contains at position 117 an alanine (Ala, A).
- Another work determines the overexpression of type M-ß-hCG (ß5, ß ⁇ , ß3) in malignant transformed non-trophoblastic tissue by the determined transformation index, consisting of the ratio between the gene expression of hCG ß5, ß8, ß3 to the total expression of all ß- hCG genes in the same tissue. It is detected with primers between exon 2 and exon 3, which recognize the point mutation C117 in the C-terminal region of the ßhCG in exon 3 (17). So far, this point mutation Asp - Ala in position 117 of the ⁇ -hCG amino acid chains in the quotient mentioned has been used as a diagnostic parameter of the neoplastic transformations.
- non-trophoblastic tissue mainly expresses type I ⁇ -hCG genes (hCG ⁇ 7, ⁇ 6), while type II ⁇ -hCG genes (hCG ⁇ 5, ⁇ 8, ⁇ 3) are also expressed after malignant transformation.
- US Pat. No. 6,194,154 describes a method for determining the malignant transformation of human cells which compares the overexpression of hCG ⁇ 3, ⁇ 5, ⁇ and ⁇ 9 mRNA in malignant cells with the expression of hCG ⁇ 7, ⁇ 6 in non-malignant cells.
- the increase in mRNA expression of hCG ß3, ß5, ß ⁇ and ß9 in relation to the total ß gene expression in the malignant cells is also determined.
- the point mutation in the mRNA nucleotide sequence from position 775 indicates an A for ⁇ 5, ⁇ , ⁇ 3 and A for ⁇ 7, ⁇ 6 and thus in the amino acid position 117 aspartate (Asp, D) or alanine (Ala, A) coded.
- a test kit is built that has been widely distributed.
- WO 0190344 refers to the promoter, enhancer and other regulators which control the expression of the protein ß-hCG in testicular carcinoma. Furthermore, explanations are given on gene therapy by introducing promoter gene ⁇ -hCG DNA into different cells, e.g. in liposomes.
- the ß-hCG protein is used as a diagnostic parameter in various tumor tissues.
- the object of the invention is to provide a method and means for determining defined states or changes in the uterus and in other organs, in particular the uterine mucosa but also in the epithelia of other organs.
- Conditions of the uterus which are to be determined in particular with the invention are the readiness of the uterine mucosa to accept an embryo or neoplastic and tumorous changes.
- the object is achieved by a method for determining defined conditions or changes in the uterus, in which mRNA is isolated from a blood and / or tissue sample and in this sample a quantitative measurement of the mRNA gene expression of ⁇ 7-hCG and / or ß6-hCG and / or ß6e-hCG.
- ß6-hCG has the gene sequence (cDNA) according to SEQ ID No 5 and ß7-hCG according to SEQ ID No 6.
- ß6e-hCG is a surprisingly newly discovered variant of type l-ß-hCG (ß6 or ß7) with a gene sequence (cDNA) according to SEQ ID NO 7.
- the ⁇ 6e-hCG gene is expressed in the endometrium and encoded for a protein according to SEQ ID No 17 or SEQ ID No 18.
- the total ⁇ hCG mRNA gene expression or the mRNA gene expression of individual or all type II ⁇ -hCG subunits is measured as an internal standard .
- the mRNA gene expression of ⁇ 7-hCG and / or ⁇ 6-hCG and / or ⁇ 6-hCG is then related to the reference standard for evaluation.
- the quantitative measurement of the mRNA gene expression is preferably carried out by means of quantitative RT-PCR.
- complementary DNA cDNA
- RT reverse transcriptase
- An oligonucleotide with a poly-dT sequence (oligo-dT) is chosen as the primer for the RT.
- the oligo-dT is preferably composed of 10 to 20 deoxythymidine (dT) monomers.
- Individual cDNAs are amplified in the subsequent PCR with a sequence-specific primer pair.
- the sequence of at least one primer is preferably chosen so that the
- Exons is formed. This selection ensures that the primer amplifies only cDNA, but not possible impurities in the sample of genomic ⁇ -hCG DNA.
- a defined amount of mRNA or cDNA of ß7-hCG or ß5-hCG is preferably used as an external standard in a measurement carried out in parallel under identical conditions.
- the PCR is particularly preferably carried out as real-time PCR.
- Known realtime PCR methods are e.g. B. the TaqMan, FRET (fluorescence resonance energy transfer) and beacon methods. Through the use of fluorescence-labeled With this method, the PCR product can advantageously be quantified during the PCR.
- the invention also claims real-time measurement as a one-tube RT-PCR or the use of other methods for the quantitative detection of the expression of specific gene copies in addition to SYBR Green I, such as the use of gene-specific oligonucleotides as hybridization samples with different dye or fluorescent marker. Connection (TaqMan, FRET, Beacon).
- total ßhCG cDNA is amplified in a first PCR step with at least one first pair of primers.
- the amplification of total ßhCG is achieved in that this first pair of primers with cDNA of type II ß-hCG subunits (ß5-hCG, ß8-hCG, ß3-hCG) as well as type l-ß-hCG - Subunits (ß7 and ß6 and ß6e) hybridized.
- the cDNA of individual or all type I- ⁇ -hCG subunits ( ⁇ 7, ⁇ 6, ⁇ 6e) is specifically amplified with at least a third primer.
- the third primer is chosen so that in the second step only type I- ⁇ -hCG and not type II- ⁇ -hCG is amplified so that it hybridizes specifically only with cDNA of ⁇ 7-hCG and ⁇ 6-hCG and ⁇ 6-hCG but not with cDNA from ß5-hCG, ß8-hCG and ß3-hCG.
- the second PCR step i. H. a so-called “nested PCR”
- at least one fourth primer specifically amplifies the cDNA of at least one or more type II ⁇ -hCG subunits ( ⁇ 5-hCG and / or ⁇ -hCG and / or ⁇ 3-hCG) the fourth primer is chosen such that it hybridizes specifically with cDNA from ⁇ 5-hCG, ⁇ -hCG and ⁇ 3-hCG, but not with cDNA from ⁇ 7-hCG and ⁇ 6-hCG and ⁇ 6e-hCG.
- the primers for the second step of the PCR can be added before or after the first step of the PCR.
- the third and fourth primers are preferably provided with different marker molecules which enable a distinction to be made between the PCR products which are formed by the amplification with the third and fourth primers.
- a 10 to 30 base pair long DNA oligonucleotide from exon 1 of the ⁇ hCG is preferably selected as the first primer of the first pair of primers for the amplification of total ⁇ hCG.
- Such a preferred primer has the sequence according to SEQ ID NO 1.
- a 10 to 30 base pair long DNA oligonucleotide of the complementary sequence of exon 3 of the ⁇ hCG is preferably selected as the second primer of the first pair of primers for the amplification of total ⁇ hCG.
- Such a preferred primer has the sequence according to SEQ ID NO 2.
- primers for the pair of primers for the amplification of total ⁇ hCG are primers with sequences according to SEQ ID NO 11 and SEQ ID NO 14.
- a 10 to 30 base pair long DNA oligonucleotide from the region of the ⁇ 7-hCG is preferably chosen as the third primer for the specific amplification of type I- ⁇ hCG.
- Such a preferred primer has the DNA sequence according to SEQ ID NO 3.
- Further preferred primers for the specific amplification of type 1- ⁇ hCG are primers with sequences according to SEQ ID NO 9, SEQ ID NO 10, SEQ ID NO 13 and SEQ ID NO 16th
- the fourth primer for the specific amplification of type II ⁇ hCG is preferably a 10 to 30 base pair long DNA oligonucleotide from the region of the ⁇ 5 hCG.
- Such a preferred primer has the DNA sequence according to SEQ ID NO 4.
- Further preferred primers for the specific amplification of type II- ⁇ hCG are primers with sequences according to SEQ ID NO 8, SEQ ID NO 12 and SEQ ID NO 15.
- At least one of the primers is fluorescence-labeled.
- the third primer is particularly preferably provided with such a fluorescence marker in order to enable quantification of the amplified type I- ⁇ hCG cDNA during the PCR.
- one of the two primers of the first pair of primers and optionally the fourth primer is also provided with fluorescent markers, but the markers of these primers differ from one another and from primer 1 in their adsorption and / or emission spectra. These different fluorescent markers enable a parallel quantification of the amplified type I- ⁇ hCG cDNA and possibly type II- ⁇ hCG cDNA during the PCR and a comparison with the total ⁇ hCG cDNA.
- Primer 1 (amplification of total ßhCG) used in FIG. 1 is not marked
- primer 2 (amplification of total ßhCG) contains the fluorescent marker NED.
- the primer 3 used in FIG. 1 for the amplification of type I- ⁇ -hCG ( ⁇ 7, ⁇ 6, ⁇ 6e) is marked with 6-FAM.
- Primer 4 for the amplification of type II- ⁇ -hCG ( ⁇ 5, ⁇ , ⁇ 3) contains the fluorescent marker HEX.
- the numbers above the nucleic acid sequences denote the amino acid positions of the encoded protein.
- the sequence regions which hybridize with the primers are marked by underlining.
- the oligonucleotide primer pairs 1 and 2 according to SEQ ID No 1 and No 2, 1 and 11, according to SEQ ID No1 and No11, as well as 14 and 2, according to SEQ ID No 14 and No2 of the sequence listing were selected such that they were used the total RNA and the RT-PCR method in a first amplification step. display all ßhCG transcripts ß5, ß ⁇ , ß3 and also ß7, ⁇ with the same efficiency. These primer pairs mentioned exclude the ßLH amplification because of different nucleotide sequence sequences.
- the transcript ß7, ß6, ß ⁇ e and with primer 4 and 2, primer ⁇ and 2, primer 12 and 11 and primer 15 and 2 the transcript ß5, ß ⁇ , ß3 amplified.
- a parallel duplication of cDNA with the primers 9, 10 and 13 (with the sequences SEQ ID NO 9 and / or SEQ ID NO 10 and / or SEQ ID NO 13) can surprisingly distinguish between the mRNA expression of ⁇ 7-hCG and ⁇ 6 -hCG and ß6e can be distinguished.
- an RT-PCR is preferably carried out which corresponds to the method described above for distinguishing the expression of type I and type II ⁇ -hCG, with the difference that in the second step two differently labeled primers from the group of the sequences SEQ ID NO 9 , SEQ ID NO 10, SEQ ID NO 13 can be used.
- the invention provides a model for tumor-specific gene transcription specifically of a new promoter ßhCG which is activated only in different tumor tissues, including but not limited to testicular carcinoma.
- the invention also provides methods for analyzing promoter expression type I- ⁇ -hCG subunits and type II- ⁇ -hCG subunit ep.
- a PCR primer 15 and 16 SEQ ID NO 15, SEQ ID NO 16 which hybridize with the promoter area is carried out.
- a diagnostic kit is preferably used, each containing a quantity of the following components:
- reaction buffers as well as corresponding reaction buffers.
- compositions of such reaction buffers are known to the person skilled in the art and usually contain RNAse inhibitors and for as building blocks for the polymerase dNTPs, and also a lot of divalent cations, such as Mg2 +.
- the diagnostic kit contains an amount of a first pair of primers that hybridizes with both type II- ⁇ -hCG ( ⁇ 5, ⁇ , ⁇ 3) and type-1- ⁇ -hCG ( ⁇ 7, ⁇ 6 and ⁇ 6e) cDNA and a third Primer which is sequence-specific for type I-ß-hCG, i.e. does not hybridize with type II-ß-hCG (ß5, ß ⁇ , ß3).
- a 10 to 30 base pair long DNA oligonucleotide from exon 1 of the ⁇ hCG is preferably selected as the first primer of the first pair of primers for the amplification of total ⁇ hCG.
- Such a preferred primer has the DNA sequence according to SEQ ID NO 1.
- a 10 to 30 base pair long DNA oligonucleotide of the complementary sequence of exon 3 of the ⁇ hCG is preferably chosen as the second primer of the first primer pair for the amplification of total ⁇ hCG.
- Such a preferred primer has the DNA sequence according to SEQ ID NO 2.
- Further preferred primers for the pair of primers for the amplification of total ⁇ hCG are primers with sequences according to SEQ ID NO 11 and SEQ ID NO 14.
- a 10 to 30 base pair long DNA oligonucleotide from the (please complete) region of the ß7-hCG is preferably chosen as the third primer for the specific amplification of type I-ßhCG.
- Such a preferred primer has the DNA sequence according to SEQ ID NO 3.
- the diagnostic kit contains an amount of a fourth primer that hybridizes specifically with type I- ⁇ -hCG cDNA, but not with type II- ⁇ -hCG cDNA.
- Further preferred primers for the specific amplification of type 1- ⁇ hCG are primers with sequences according to SEQ ID NO 9, SEQ ID NO 10, SEQ ID NO 13 and SEQ ID NO 16.
- the fourth primer for the specific amplification of type II- ⁇ hCG is preferably a 10 to 30 base pair long DNA oligonucleotide from the (please add) region of the ⁇ 5-hCG.
- Such a preferred primer has the DNA sequence according to SEQ ID NO 4.
- Further preferred primers for the specific amplification of type II- ⁇ hCG are primers with sequences according to SEQ ID NO ⁇ , SEQ ID NO 12 and SEQ ID NO 15.
- At least one of the primers is preferably fluorescence-labeled. This enables real-time PCR to be carried out.
- a primer of the first pair of primers, the third primer and optionally the fourth primer are particularly preferably provided with fluorescent markers which differ from one another in their adsorption and / or emission spectra.
- primer sequences with the sequences according to SEQ ID NO 3 and SEQ ID NO 4 and SEQ ID NO 8 to SEQ ID NO 16 are also part of the invention.
- the method is used according to the invention for determining defined states or changes in the uterus.
- the readiness for absorption of the uterine mucosa for the implantation of an embryo or also neoplastic and tumorous changes can be determined.
- a preferred use of the method is the use for diagnosing the receptivity of the uterine mucosa (implantation diagnosis).
- the diagnosis of the receptivity of the uterine mucosa is used to determine optimal implantation conditions, i. H. Understanding the possibility of understanding that there are optimal conditions for a fertilized egg in the uterine mucosa to embed itself and subsequently grow there.
- the invention is based on the scientific knowledge that the level of expression of the genes of type I- ⁇ -hCG ( ⁇ 7, ⁇ 6, ⁇ 6) in the normal secretory epithelium of the uterine mucosa (endometrium) or in the mononuclear cells of the peripheral blood is a reliable indicator for a possible successful implantation.
- a reliable indicator of a possible successful implantation is the assessment of the proportion of the expressed 5'-non-translating promoter sequences of the ßhCG (exon 1) of ßhCG gene ß7, ß6 absolute or relative to ß5, ß ⁇ , ß3 represents.
- the genes hCG ß7 and ß6 of the gene cluster are mainly expressed in the normal secretory epithelium of the uterine mucosa.
- the genes hCG ß5, ß ⁇ , ß3 of the gene cluster are expressed in the normal trophoblast and in the carcinoma-transformed epithelium. Lymphocytes (CD3), natural killer cells and monocytes (CD14) express hCG ß5 in normal people.
- hCG and the allelic gene ⁇ 7 In order to diagnose the receptivity of the uterine mucosa according to the invention, it is necessary to determine the expression of hCG and the allelic gene ⁇ 7. It was recognized that the levels of ß6- and ß7-hCG were found in the body's epithelial Tissue or blood cells essentially determine the success of an implantation, and therefore knowing the amount of hCG ß7 and ß6 in absolute or relative terms, knowing the quotient of hCG ß7, ß6 as a numerator and hCG ß5, ß ⁇ , ß3 as a denominator, provides information about the promising one Implantation moment there.
- the quantitative RT-PCR is suitable for determining the hCG ß7, ß6, ß6e and the hCG ß5, ß ⁇ , ß3 portion.
- tissue is preferably taken from a patient's endometrium or from the cervical mucosa or peripheral blood and the analysis of the mRNA expression in this blood or tissue sample is determined using the method according to the invention. From the level of mRNA expression of ß7-hCG and / or ß6-hCG and / or ß6-hCG determined, conclusions can be drawn about the readiness of the uterus to accept an embryo in the current or subsequent cycle.
- cells are preferably obtained 4 to 6 days after ovulation with a mini catheter from the uterine cavity, with a cotton ball from the cervical canal or with a wooden spatula from the oral mucosa or peripheral EDTA or heparin blood is taken.
- the mRNA ßhCG is isolated from the cells taken up, produced by RT-PCR cDNA, the cDNA amplified and quantified.
- the cDNA is preferably produced and amplified from the mRNA by real-time measurement in a one-tube RT-PCR.
- other methods for the quantitative detection of the expression of specific gene copies according to the invention are used, preferably using gene-specific oligonucleotides as hybridization samples with different dye or fluorescent marker binding (TaqMan, FRET, Beacon).
- a positive detection of the mRNA of ß6-hCG, ß7-hCG or ß ⁇ e-hCG indicates that the endometrium differentiates in the direction of implantation maturity.
- Another preferred use of the method is the use for retrospective diagnosis of the receptivity of the uterine mucosa.
- retrospective implant diagnosis is understood to mean that optimal implantation conditions existed in the past cycle.
- the information about the implantation conditions in the past cycle can be used to make predictions about the implantation conditions, ie the readiness of the uterus to absorb a fertilized egg or an embryo, in the subsequent cycle.
- the procedure is basically the same as for the preparatory implant diagnosis, with the difference that the analysis of the ⁇ 6 and ⁇ 7 hCG expression takes place in a sample of menstrual blood. Sufficient cells of the endometrium are present in the menstrual blood to enable analysis.
- Another preferred use of the method is the use for tumor diagnosis.
- the use according to the invention is based on the scientific knowledge that a reliable indicator of the presence and growth of tumor cells is the evaluation of the proportion of expressed 5'-non-translating promoter sequences of the ⁇ hCG (exon 1) from ⁇ hCG gene ⁇ 7, ⁇ to ⁇ 5, ⁇ , ß3, which differ in this gene section in a large number of nucleotide differences.
- tissue from the endometrium or cervix is preferably removed and the mRNA expression in this tissue sample is analyzed using the method according to the invention.
- the values of the mRNA expression in tumor tissue are preferably compared with the values of the mRNA expression in healthy tissue.
- the value of the mRNA expression of ⁇ 7-hCG and / or ⁇ 6-hCG and / or ⁇ 6e hCG is divided by the sum of the expression mRNA expression of total ⁇ hCG and the amount obtained in this way Quotients made conclusions about the degree of malignancy of the tumor.
- Embodiment 1 RT-PCR with fluorescence-labeled primers for diagnosing the receptivity of the uterine mucosa for an embryo implantation
- Embodiment 2 RT-PCR with unlabeled primers for diagnosing the receptivity of the uterine mucosa for an embryo implantation
- Embodiment 3 RT-PCR with unlabeled primers for retrospective diagnosis of the receptivity of the uterine mucosa for an embryo implantation
- Embodiment 4 RT-PCR with unlabeled primers for tumor diagnosis
- Embodiment 5 RT-PCR with fluorescence-labeled primers for tumor diagnosis
- Embodiment 6 RT-PCR with fluorescence-labeled primers for tumor diagnosis Example 1:
- cells are removed from the uterine cavity with a mini-catheter or with a cotton ball from the cervix or with a wooden spatula from the oral mucosa.
- the cells are frozen and stored at minus ⁇ 0 ° C until further processing.
- a trizole-RNA extraction is carried out from the cells taken up, the cDNA of the endometrial hCG is specifically amplified and quantified in the subsequent RT-PCR process.
- hCG ß7, ß6 and ß6e can essentially be represented by hCG ß7 (six nucleotide differences in exon 1 to 24 nucleotide differences between ß7 and ß5).
- the hCG ß7, ß6, ß6e fractions can be determined summarily, but also directly for hCG ß7 and hCG ß6.
- the detection of low to high hCG ß5, ß ⁇ , and ß3 in the endometrial tissue or its cells can be an indication of a tumor disease.
- the tissue samples can also be obtained analogously using the fractional abrasion method.
- Endometrial tissue (10 - 30 mg) or cells of this origin are frozen in liquid nitrogen or at -60 ° C immediately after removal.
- the total RNA is extracted with trizole and about 1 ⁇ g of the RNA for 60 min at 42 ° C under standard conditions and using Oligo-dT (15) primer reverse-transcribed.
- the proportion of the gene-specifically expressed ⁇ hCG amplificates ⁇ 7, ⁇ 6, ⁇ 6e in the endometrium becomes the total hCG proportion of hCG ⁇ 7, ⁇ 6 plus hCG ⁇ 5, ⁇ , ⁇ 3 rated.
- the nested RT-PCR method is used, which in the first RT-PCR step contains the total proportion of ßhCG with specific primers and the fluorescent marker 1 and in the following nested PCR step with this product once hCG ß7, ß6, ß6e with fluorescent marker 2 and hCG ß5, ß ⁇ , ß3 with fluorescent marker 3 measured.
- a software program calculates the proportion of hCG ß7, ß6, ⁇ e to the total proportion of ßhCG as a quotient.
- tissue in liquid nitrogen tissue in liquid nitrogen
- Ultra Turrax tissue homogenization tissue homogenization
- trizole RNA extraction RNA extraction
- RT-PCR on a thermocycler fluorescence measurement of the cDNA amplificate on the DNA sequencer ABI 373A
- software Genescan 672 fragment analysis for evaluation, liquid nitrogen, trizole, cDNA synthesis kit, PCR amplification kit, ßhCG primer for total ßhCG amplification and nested PCR for ß7, ß ⁇ , ß6e and ß5, ß ⁇ , ß3 partially fluorescence-labeled.
- RNA Extraction of the total RNA: The fresh tissue material is frozen in liquid nitrogen immediately after removal. The total RNA is extracted using the Chomczynski and Sacchi (24) method, the RNA obtained is quantified spectrophotometrically at 260 nm / 230 nm, further processed immediately or stored at - ⁇ 0 ° C.
- Reverse transcription 1 ⁇ g total RNA is transcribed in a reaction mix with a total volume of 5 ⁇ l according to the standard method: 10 mM Tris-HCl, pH ⁇ , 3, 50 mM KCI, 5 mM MgCI 2 , 1 mM each dNTP (dATP , dTTP, dCTP, dGTP), 200 ng oligo dT primer pdT15, 12.5 U RNAse inhibitor, 2.5 U AMV revertase.
- PCR amplification of the entire ßhCG transcripts To the cDNA product, the PCR mix of 20 ⁇ l in a total volume of 25 ⁇ l is added in the same tube for the amplification of the total ßhCG transcript: final concentration of 10 mM Tris-HCl with pH 8 , 3, 50 mM KCI, 1, 5 mM MgCI 2 , 200 uM dNTP, 5 pmol each of the two selected primers and 2.5 U Taq DNA polymerase.
- the amplification conditions after a previous 3 min incubation at 95 ° C are then 30 sec 95 ° C, 30 sec 60 ° C, 60 sec 72 ° C for 35 cycles with a final 7 min at 72 ° C and rapid cooling to 4 ° C.
- Nested PCR for ßhCG ß7, ß6 and ß ⁇ , ß8, ß3 transcripts 2 ⁇ l of the 1: 10,000 diluted PCR product are added to a total volume of 20 ⁇ l in a PCR mix with the final volume of 10 mM Tris-HCl, pH 8.3, 10 mM KCI, 3 mM MgCI 2 , 50 ⁇ M dNTP, 0.1 pmol primer 2, 0.1 pmol primer 3, 0.1 pmol primer 4 and 2 U Taq DNA polymerase (Stoffel fragment) were added , The reaction is carried out over 5 cycles on a thermal cycler for 30 seconds at 95 ° C. and 30 seconds at 65 ° C. The nested PCR reaction is also carried out with Taq DNA polymerase under standard conditions.
- the product obtained contains the two amplification products for ßhCG ß7, ß6, ß6e and possibly of hCG ß5, ß ⁇ , ß3, each with a different fluorescent marker for primer 4 and primer 3, and both transcripts additionally contain a third common fluorescent marker of primer 2.
- the transcription index is, as in Bellet et al. (17) calculated using this method.
- the absolute quantitative evaluation of the expressed copy numbers for the gene-specific ßhCG amplificates ß7, ß6, ß6e and possibly ßhCG ß5, ß ⁇ , ß3 according to real-time RT-PCR in comparison to ßhCG-specific calibrators in the case of non-fluorescence-labeled ßhCG primers for the evaluation of the normal, highly developed or substandard or missing secretory transformed endemetrial tissue.
- Real-time PCR on the Light Cycler (Röche) or comparable devices from other companies such as Applied Biosystems for the amplification of the tumor cDNA is used for the quantitative determination of the three ßhCG expression components mentioned above.
- the RNA standards of the three ßhCG expression fractions ß7, ß6, ß6e and possibly ß5, ß ⁇ , ß3 and the total ßhCG the three associated calibration fragments under standard PCR conditions from endometrial, placental and tumor cDNA amplified.
- ßhCG type II ß ⁇ , ß5, ß3) -, ßhCG type I (ß7, ß6) - and total ßhCG-specific forward hCG primers (primers 1, 3, 4 or others ) is used with the common reverse-ßhCG primer (primer 2 or others).
- the PCR products obtained are cloned in the plasmid vector pGEM-T.
- the plasmid serves as a template for the in vitro formation of RNA according to the manufacturer's protocol.
- the standard RNA formed is purified and its concentration is measured.
- Real-time PCR amplification on a light cycler (Röche) or ABI systems (Applied Biosystems) determines the number of gene copies formed for the two gene-specific ßhCG expression groups type II (ß ⁇ , ß5, ß3) and type I (ß7, ß6) and total ßhCG in endometrial tissue and in the RNA standards and below Using the primers ⁇ , 9, 10 against 2, the individual proportions of ß5, ß6 and ß7 can also be detected and absolutely quantified.
- the PCR reaction takes place in the 20 ⁇ l reaction volume in the final concentrations of 1 ⁇ PCR buffer of 50 mM Tris-HCl (pH ⁇ , 3), 200 ⁇ M dNTPs, with 0.5 ⁇ M of the specific forward and reverse ßhCG -Primer, 4 to 5 mM MgCI 2 , 0.5 U Taq polymerase, SYBR Green I with 1: 3000 of the stock solution (Molecular Probes) and 1 ⁇ l of the templates (endometrial cDNA against standards of known concentration).
- Other methods of real time RT-PCR (TaqMan, FRET, Beacon) are used alternatively.
- menstrual blood is taken from the patient and the corpuscular cell parts are centrifuged off. The cells are immediately frozen and stored at minus 30 ° C until further processing.
- the procedure for analyzing the mRNA expression of the endometrial ⁇ hCG is as described in Example 1.
- Tissue samples of the endometrium, endocervix, oral mucosa or other selected epithelium are examined for prospective implantation diagnostics in the early to middle secretion phase of the current cycle in order to determine the quality of the secretory transformation and the expected receptivity of the endometrium (e.g. for The decision to embargo an embryo transfer or insemination in the hormonally stimulated cycle) makes the retrospective diagnosis of the receptivity of the uterine mucus (e.g.
- menstrual blood as a non-invasive method after embryo transfer or only after a stimulated or unstimulated cycle an important one and simple method to make statements about the secretory transformation of the endometrium of the previous cycle as diagnostics and / or possibly therapy control and statements for the subsequent cycle. Possibly. this method can supplement or replace the usual (clinically used) invasive method of the streak abrasion in its statement. , , , , ,
- the patient is given cells with a mini catheter from the uterine cavity or with a cotton ball from the cervix or with a wooden spatula taken from the oral mucosa.
- the cells are immediately frozen and stored at minus 30 ° C until further processing.
- a trizole-RNA extraction is carried out from the recorded cells, the cDNA of the endometrial ßhCG is specifically amplified in the subsequent RT-PCR process and recorded quantitatively.
- hCG ß5, ß ⁇ and ß ⁇ e is an indicator of a tumor disease.
- the presence of hCG ß7, ß6 and ß3 indicates the opposite: a possible non-trophoblastic tumor disease can be excluded.
- ßhCG diagnostics can detect aggressive tumors, so that the diagnosis also gives a therapeutic indication.
- hCG ß ⁇ and ß6e is essentially represented by hCG ß7 (see exemplary embodiment 1).
- the examinations are advantageously carried out in the endometrium in order to detect carcinomas here. Tissue samples can also be obtained analogously using the fractional abrasion method.
- Endometrial tissue or cells of this origin (10 - 100 mg) are frozen in liquid nitrogen or at -80 ° C immediately after removal.
- the total RNA is extracted with trizole and about 1 ⁇ g of the RNA for 60 min at 42 ° C under standard conditions and using Reverse-transcribed oligo-dT (15) primer.
- tissue in liquid nitrogen tissue in liquid nitrogen
- Ultra Turrax tissue homogenization tissue homogenization
- trizole RNA extraction RNA extraction
- RT-PCR on a thermal cycler fluorescence measurement of the cDNA amplificate on the DNA sequencer ABI 373A or comparable models
- software Genescan 672 fragment analysis for evaluation, liquid nitrogen , Trizol, cDNA synthesis kit, PCR amplification kit, ßhCG primer for total ßhCG amplification and nested RT-PCR for ß7, ß6, ß ⁇ e and ß5, ß ⁇ , ß3 partly fluorescence-labeled.
- RNA Extraction of the total RNA: The fresh tissue material is frozen in liquid nitrogen immediately after removal. The total RNA is extracted using the Chomczynski and Sacchi (24) method, the RNA obtained is quantified spectrophotometrically at 260 nm / 230 nm, further processed immediately or stored at - ⁇ 0 ° C.
- Reverse transcription 1 ⁇ g total RNA is transcribed in a reaction mix with a total volume of 5 ⁇ l according to the standard method: 10 mM Tris-HCl, pH ⁇ , 3, 50 mM KCI, 5 mM MgCI 2 , 1 mM each dNTP (dATP , dTTP, dCTP, dGTP), 200 ng oligo dT primer pdT15, 12.5 U RNAse inhibitor, 2.5 U AMV revertase.
- PCR amplification of the entire ßhCG transcripts To the cDNA product, the PCR mix of 20 ⁇ l in a total volume of 25 ⁇ l is added in the same tube for the amplification of the total ßhCG transcript: final concentration of 10 mM Tris-HCl with pH 3.3, 50 mM KCI, 1.5 mM MgCI 2 , 200 ⁇ M dNTP, 5 pmol primer 1, 5 pmol primer 2 and 2.5 U Taq DNA polymerase.
- the amplification conditions are, after previous 3 min incubation at 95 ° C, then 30 sec 95 ° C, 30 sec 60 ° C, 60 sec 72 ° C for 35 cycles with a final 7 min at 72 ° C and rapid cooling to 4 ° C.
- Nested PCR for ßhCG ß7, ß6 and ß ⁇ , ß8, ß3 transcripts 2 ⁇ l of the 1: 10,000 diluted PCR product are added to a total volume of 20 ⁇ l in a PCR mix with the final volume of 10 mM Tris-HCl, pH 3.3, 10 mM KCI, 3 mM MgCI 2 , 50 ⁇ M dNTP, 0.1 pmol primer 2, 0.1 pmol primer 3, 0.1 pmol primer 4 and 2 U Taq DNA polymerase (Stoffel fragment ) added. The reaction is carried out over 5 cycles on a thermal cycler for 30 seconds at 95 ° C. and 30 seconds at 65 ° C. The nested PCR reaction is also carried out with Taq DNA polymerase under standard conditions.
- the product obtained contains the two amplification products for ßhCG ß7, ß6, ß6e and of hCG ß5, ß ⁇ , ß3, each with a different fluorescent marker for primer 4 and primer 3, and both transcripts additionally contain a third common fluorescent marker of primer 2.
- the transcription index is, as in Bellet et al. (17) calculated using this method.
- Tumor tissue (50-200 mg) is frozen in liquid nitrogen immediately after removal.
- the total RNA is extracted with trizole and about 1 ⁇ g of the RNA for 60 min at 42 ° C under standard conditions and using oligo reverse transcribed dT (15) primer.
- Real-time PCR on the Light Cycler (Röche) or comparable devices from other companies such as Applied Biosystems for the amplification of the tumor cDNA is used for the quantitative determination of the three ßhCG expression components mentioned above.
- the three associated calibration fragments are amplified under standard PCR conditions from endometrial, placental and tumor cDNA.
- ßhCG type II ß ⁇ , ß5, ß3) -, ßhCG type I (ß7, ß6) - and total ßhCG-specific forward-ßhCG primers (primers 1, 3 and 4 or others ) is used with the common reverse-ßhCG primer (primer 2 or others).
- the PCR products obtained are cloned in the plasmid vector pGEM-T.
- the plasmid serves as a template for the in vitro formation of RNA according to the manufacturer's protocol.
- the standard RNA formed is purified and its concentration is measured.
- Real-time PCR amplification on light cyclers (Röche) or ABI systems (applied biosystems) determines the number of gene copies formed for the two gene-specific ßhCG expression groups type II (ß ⁇ , ß5, ß3) and type I (ß7, ß ⁇ ) and total ßhCG in the tumor tissue and in the RNA standards and using the primers ⁇ , 9, 10 against 2, the individual components of hCG ß5, ß ⁇ and ß7 can also be recorded and quantified absolutely.
- the PCR reaction takes place in a 20 ⁇ l reaction volume in the final concentrations of 1 x PCR buffer of 50 mM Tris-HCl (pH 8.3), 200 ⁇ M dNTPs, with 0.5 ⁇ M of the specific forward and reverse ßhCG -Primer, 4 to 5 mM MgCl 2 , 0.5 U Taq polymerase, SYBR Green I with 1: 3000 of the stock solution (Molecular Probes) and 1 ⁇ l of the templates (tumor cDNA or standards of known concentration). Other methods of real time RT-PCR (TaqMan, FRET, Beacon) are also used.
- the invention also claims real-time measurement as a one-tube RT-PCR or the use of other methods for the quantitative detection of the expression of specific gene copies in addition to SYBR Green I, such as the use of gene-specific oligonucleotides as hybridization samples with different dye or Fluorescence marker connection (TaqMan, FRET, Beacon).
- Tumor tissue is removed for diagnosis and stored in liquid nitrogen.
- An RNA extraction (23) is followed by an RT-PCR with a fluorescence-labeled primer pair according to embodiment 4.
- the total ⁇ hCG expression ⁇ 5, ⁇ , ⁇ 3 and ⁇ 7, ß6 via exonl, exon 2 and exon 3 is recorded in a nested PCR with fluorescence-labeled primers for the ß7, ß6- and ß5, ß ⁇ , ß3-portion and as a quotient of ß5, ß ⁇ , ß3-portion to ß7, ß6- plus ß5, ß ⁇ , ß3-portion for the evaluation of the neoplastic and tumorous non-trophoblastic tissue evaluated as follows: result 0 for normal tissue and result> 0 to 1 for neoplastic tissue - according to embodiment 4.
- tissue in liquid nitrogen tissue in liquid nitrogen
- Ultra Turrax tissue homogenization tissue homogenization
- trizole RNA extraction RNA extraction
- RT-PCR on a thermocycler fluorescence measurement of the cDNA amplificate on the DNA sequencer ABI 373A
- software Genescan 672 fragment analysis for evaluation, liquid nitrogen, Trizol, cDNA synthesis kit, PCR amplification kit, ßhCG primer for total ßhCG amplification and nested PCR for ß5, ß ⁇ , ß3 and ß7, ß ⁇ , partly fluorescence-labeled.
- RNA is extracted from the tissue material in liquid nitrogen immediately after removal.
- the total RNA is extracted using the Chomczynski and Sacchi (24) method, the RNA obtained is quantified spectrophotometrically at 260 nm / 2 ⁇ 0 nm, immediately further processed or stored at - ⁇ 0 ° C.
- Reverse transcription 1 ⁇ g total RNA is transcribed in a reaction mix with a total volume of 5 ⁇ l according to the standard method: 10 mM Tris-HCl, pH 8.3, 50 mM KCI, 5 mM MgCl 2 , 1 mM each dNTP (dATP, dTTP, dCTP, dGTP), 200 ng oligo dT primer pdT15, 12.5 U RNAse inhibitor, 2.5 U AMV revertase (Röche).
- PCR amplification of the entire ßhCG transcripts To the cDNA product, the PCR mix of 20 ⁇ l in a total volume of 25 ⁇ l is added in the same tube for the amplification of the total ßhCG transcript: final concentration of 10 mM Tris-HCl, pH 8.3, 50 mM KCI, 1.5 mM MgCI 2 , 200 ⁇ M dNTP, 5 pmol each of the two selected primers and 2.5 U Taq DNA polymerase.
- the amplification conditions after a previous 3 minute incubation at 95 ° C. are then 30 seconds 95 ° C., 30 seconds 60 ° C., 60 seconds 72 ° C. for 35 cycles with a final 7 minutes at 72 ° C. and rapid cooling to 4 ° C.
- Nested PCR for ßhCG ß7, ß6 and ß ⁇ , ß8, ß3 transc pts 2 ⁇ l of the 1: 10,000 diluted PCR product are added to a total volume of 20 ⁇ l in a PCR mix with the final volume of 10 mM Tris-HCl, pH 3.3, 10 mM KCI, 3 mM MgCI 2 , 50 ⁇ M dNTP, 0.1 pmol primer 2, 0.1 pmol primer 3, 0.1 pmol primer 4 and 2 U Taq DNA polymerase (Stoffel fragment) added. The reaction is carried out over 5 cycles on a thermal cycler for 30 seconds at 95 ° C. and 30 seconds at 65 ° C. The nested PCR reaction is also carried out with Taq DNA polymerase under standard conditions.
- the product obtained contains the two amplification products for ßhCG ß5, ß ⁇ , ß3 and ß7, ß6, each with a different fluorescent marker for primer 3 and primer 4, and both transcripts additionally contain a third common fluorescent marker of primer 2.
- the transcription index is, as in Bellet et al. (17), calculated according to this method as the quotient of ßhCG ß7, ß6 to the sum of ßhCG ß7, ß ⁇ and ß5, ⁇ , ß3.
- the presented invention has a number of significant advantages.
- the results obtained become more reliable because there are several starting points for the indicator.
- our solution includes exon 2 and a promoter gene.
- Our process allows a distinction between malicious and in benign tumors with the desired consequences for a therapeutic approach. This is based on the finding that the degree of malignancy of a non-trophoblastic tumor is indicated by the presence of hCG ß5, ß ⁇ , ß3.
- Its concentration is measured as a fluorescence value in exemplary embodiment 4 and related to hCG ⁇ 5, ⁇ , ⁇ 3 by forming the quotient of hCG ⁇ 5, ⁇ , ⁇ 3 to the sum of hCG ⁇ 5, ⁇ , ⁇ 3 plus hCG ⁇ , ⁇ 7.
- the presence of hCG ⁇ 5, ⁇ , ⁇ 3 is absolutely quantified by real-time RT-PCR by the number of copies of its gene expression in comparison to the sequence-specific ⁇ hCG standard series and also by hCG ⁇ 7, ⁇ 6.
- test kit which contains the following constituents:
- RT reaction mix RT reaction buffer with dNTPs, oligo-pdT15, RNAse inhibitor for cDNA formation
- the mRNA quantification kit for ßhCG genes ß5, ß7 allows the highly sensitive and specific determination of the gene expression of ßhCG in normal and tumor tissue for diagnosis and therapy control.
- the specific.ßhCG ß5- and. ßhCG ß7 copies can be acquired over a wide measuring range with a set of calibration standards of ßhCG ß5 and ßhCG ß7 mRNA.
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DE10325637 | 2003-06-06 | ||
DE10325637 | 2003-06-06 | ||
PCT/DE2003/004293 WO2004058999A2 (en) | 2002-12-21 | 2003-12-19 | Method and means for determining specific conditions or changes in the uterine epithelium and in the epithelium of other organs |
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JP2010540534A (en) | 2007-09-28 | 2010-12-24 | イントレキソン コーポレーション | Therapeutic gene switch constructs and bioreactors for the expression of biotherapeutic molecules and uses thereof |
WO2010010201A1 (en) | 2008-07-22 | 2010-01-28 | Equipo Ivi Investigacion Sl | Gene expression profile as a marker of endometrial receptivity |
AU2015275798B2 (en) | 2014-06-17 | 2021-03-25 | Asherman Therapy, S.L. | Stem cell therapy in endometrial pathologies |
EP3820356A4 (en) | 2018-07-12 | 2022-06-08 | Richter Gedeon Nyrt. | Vaginal temperature sensing apparatus and methods |
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